Mountain Equipment Company

Platypus Big Zip EVO Reservoir


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Rocksolid guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, electronics, undergarments and swimwear excluded).
Really. If it's not up to snuff after you use it (a couple times) you can still bring it back. It lasts longer than 30 days, but not forever. We'll be fair about it.


As the newest evolution in taste-free hydration, the Big Zip EVO delivers a significant 50% increase in flow rate from its predecessor, so you feel satisfied with less slurping. Makes a great option for backpackers, hikers and mountain bikers. The silver-ion in the materials keeps the reservoir fresh and bacteria-free.

  • Secure zip-seal for easy opening, closing and filling
  • Pincher grip helps with one-handed filling
  • High-mount quick disconnect is easy to reach when the reservoir's in your pack
  • HyFlow bite valve improves flow
  • Shut-off valve is leak-proof and ideal for stowing
  • Easy to clean, thanks to the wide opening and rounded corners
  • Embedded silver-ion protects clean water from mold and bacteria
  • Semi-rigid baffle helps keep reservoir open to help it dry faster and with less fuss
  • All materials are certified food-grade, BPA-, BPS-, phthalate-free and taste-free, guaranteed

Tech specs

Weight160g (1.5L)
171g (2L)
184g (3L)
Ideal for
  • Day hiking
  • Backpacking
  • Running
  • Mountain biking
  • Polyurethane
  • Polyethylene
Quick-disconnect tubeYes
Bite valve shut-off switchYes
Made inUSA

Reviews (43)

3 out of 5 stars with 43 reviews for Platypus Big Zip EVO Reservoir

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